Echarts在线免费图表

 
            // mock数据
const mockData = {
    value: 95,
    name: '通过率'
}
// 渐变色
var color = [
    { offset: 0, color:  'rgba(15, 255, 171, 0.2)' },
    { offset: 0.6, color:  'rgba(15, 255, 171, 0.6)' },
    { offset: 0.95, color: 'rgba(15, 255, 171, 0.7)' },
    { offset: 1, color: 'rgba(15, 255, 171, 0.9)' }
];

// 圆环宽度
const barMaxWidth = 40

// 坐标轴
const angleAxis = {
    show: false,
    max: 100 * 360 / 270,
    type: 'value',
    startAngle: 225,
    splitLine: { show: false }
}

// 坐标轴
const radiusAxis = {
    show: false,
    type: 'category',
}

//圆环位置和大小
const polar = {
    center: ['50%', '50%'],
    radius: '135%'
}
const series =  [{
    type: 'bar',
    data: [{ 
        //上层圆环，显示数据
        value: mockData.value,
        itemStyle: {
            color: { type: 'linear', x: 0, y: 0, x2: 1, y2: 0, colorStops: color, },
        },
    }],
    label: {
        show: true,
        formatter: params => {
            return `{a|${params.value}}{b| %}\n\n\n{c|${mockData.name}}`
        },
        rich: {
            a: { fontSize: 60, verticalAlign: 'bottom' },
            b: { fontSize: 16, verticalAlign: 'bottom' },
            c: { fontSize: 40 }
        }
    },
    barGap: '-100%', 
    coordinateSystem: 'polar', 
    roundCap: true,
    z: 2 
},
{ 
    type: 'bar',
    data: [{
        value: 100,
        itemStyle: { color: 'rgba(168, 255, 255, .35)' }
    }],
    barGap: '-100%',
    coordinateSystem: 'polar',
    roundCap: true,
    z: 1
}]
// 渲染
option = { barMaxWidth, radiusAxis, polar, angleAxis, series, backgroundColor: 'rgba(0, 0, 0, .8)'};